H A R D W A R E D E S C R I P T I O N
DNPCIe_10G_K7_LL (_QSFP) User Manual
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Figure 7 - SFP+ Channel 0 Interface
Fixed frequency, 156.25 MHz LVPECL oscillator (X5), is used to clock the GTX
transceivers, see
Figure 8
. These parts are available from Silicon Laboratories, P/N
534SC000390DG. The oscillator power supply is filtered to reduce power supply noise
and jitter.
Figure 8 – SFP+ GTX Oscillator
2.7.2
LED indicators
SFP0 and SFP1 have separate LED indicators that indicate the state to the ‘light pipes’
that display on the bracket. On the bracket ‘0’ indicated SFP0 and ‘1’ indicates SFP1.
The color of the lights indicates the following: Green = host good, module good; Red =
host bad, module bad; Orange = host good, module bad; No light = host bad, module
good.